"Interior Expert Reveals the 'Five-Minute Rule' to Eliminate Condensation and Prevent Mold"

Published on October 17, 2025 at 11:27 AM
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As the temperature starts to drop, many of us will feel the chill and instinctively reach for the thermostat.

This can lead to increased humidity in our homes, particularly when drying damp clothes on radiators, cooking in the kitchen, or stepping out of a hot shower.

Condensation on a closed wooden window frame with a metal lock.Condensation is a common household issue during the autumn and winter monthsCredit: Getty Mould growth. Mould spores thrive on moisture. Mold spores can quickly grow into colonies when exposed to water.This creates an ideal environment for mould to developCredit: Getty

These factors can all contribute to the accumulation of mildew and condensation as outdoor temperatures drop.

This, in turn, can lead to dampness and mould, which are prevalent problems in homes across Scotland during the autumn and winter seasons.

Not only can these issues be challenging to eliminate, but if left untreated, they can pose health risks.

It's no surprise that homeowners nationwide are eager to take preventive measures and are already seeking ways to keep their homes safe.

To assist, interior experts have introduced a useful 'five-minute rule' designed to eliminate condensation and prevent mould.

Indoor living specialists at VonHaus have shared an old German method that suggests opening your windows on a chilly day for just five minutes to manage condensation.

While our instinct might be to tightly close windows to keep the cold air out, experts caution that this can trap moisture indoors, creating a perfect breeding ground for mould.

A brief opening can expel the warm air and help keep your home mould-free over time.

VonHaus experts state: “Germans are known for their efficiency and engineering, and it seems they also excel in controlling condensation.

“The ‘five-minute rule’ is based on the practice of short, intense ventilation.

“The concept is straightforward: open your windows wide for five minutes each morning, preferably after cooking or showering, to expel humid air and replace it with drier, cooler air from outside.

“It may seem counterintuitive, right? Opening a window when it’s freezing outside feels like inviting Jack Frost in for tea. But the science is sound.

“Warm air can hold more moisture than cool air, so by exchanging humid indoor air with cold outdoor air, you effectively lower overall moisture levels indoors once that air warms up.

“This tip is effective, but it’s not a complete solution if your home already experiences high humidity levels.”

However, the experts cautioned that relying solely on condensation hacks can feel like trying to patch leaks on a sinking ship if the root cause of excess moisture isn't addressed.

If this is the case, they recommend homeowners invest in a dehumidifier to help maintain optimal indoor humidity levels.

Aneesa Khan, Assistant Home Electricals Buyer at VonHaus, states: “For homes with ongoing condensation or mould issues, a dehumidifier is essential.

“Naturally, there’s an initial expense to consider.

“But when you factor in potential savings from avoiding mould remediation or replacing damaged woodwork, it becomes a wise investment.

“Additionally, the health benefits of lowering indoor humidity—especially for those with asthma or allergies—are hard to overlook.”

How to Remove Mould on a Budget

JIMMY Englezos, a DIY expert from Ronseal, has shared his top tips for removing mould from your home affordably.

He advises: “As a general guideline, when eliminating mould, open the windows in the room to ventilate the area and keep the door to the rest of the home closed to prevent mould spores from spreading.”

1. Mould Spray

“Specialised mould treatments are available at various retailers and can be used to spray directly on the affected surface to treat mould growth.

“Use a damp cloth or sponge to wipe down the surface and eliminate the mould. After removing the mould, use a clean dry cloth to erase any remaining moisture.

“Dispose of the cloth and vacuum the room to remove all spores.”

2. Washing Up Liquid

“A similar approach can be taken with washing up liquid and water instead of the spray — however, it may not be as effective for larger areas.

“This method is also more economical, as washing up liquid can be obtained for as little as 62p. Exercise caution when removing mould from wallpaper, as excessive water can cause it to bubble.”

3. White Vinegar

“This common kitchen ingredient can be highly effective in cleaning and removing mould, costing as little as 35p. To eliminate mould, mix a solution of one part vinegar and water in a spray bottle.

“Spray the affected areas and let it sit for an hour. Afterward, wipe away the vinegar residue with a damp cloth, which should eliminate the mould. This solution is particularly suitable for kitchens as it is chemical-free.”

4. Bleach

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